Bug#983637: tracker-extract: Add newfstat() to syscall list

[Guido Günther]

Hi,
On Thu, Jun 24, 2021 at 11:40:04AM +0200, Guido Günther wrote:
> Hi,
> On Sat, Feb 27, 2021 at 05:16:04PM +0100, Julian Andres Klode wrote:
> > Package: tracker-miners
> > Version: 2.3.5-2
> > Severity: normal
> > Tags: patch
> > User: ubuntu-devel at lists.ubuntu.com
> > Usertags: origin-ubuntu hirsute ubuntu-patch
> > X-Debbugs-Cc: juliank at ubuntu.com
> > 
> > In Ubuntu, the attached patch was applied to achieve the following:
> > 
> > Fix tracker-extract crashing constantly with new glibc.
> 
> I somehow missed this bug when preparing
> 
> https://salsa.debian.org/gnome-team/tracker-miners/-/merge_requests/14
> 
> but i can confirm missing 'newfsstat` crashes the miner constantly like
> 
> Program terminated with signal SIGSYS, Bad system call.
> #0  __GI___xstat (vers=<optimized out>, name=0xffff803cd178 "/etc/localtime", buf=0xffff4ae26bd0) at ../sysdeps/unix/sysv/linux/generic/xstat.c:36
> 36	../sysdeps/unix/sysv/linux/generic/xstat.c: No such file or directory.
> [Current thread is 1 (Thread 0xffff4ae28050 (LWP 3217))]
> (gdb) bt
> #0  __GI___xstat (vers=<optimized out>, name=0xffff803cd178 "/etc/localtime", buf=0xffff4ae26bd0) at ../sysdeps/unix/sysv/linux/generic/xstat.c:36
> #1  0x0000ffff8033411c in __tzfile_read (file=file at entry=0xffff803cd178 "/etc/localtime", extra=extra at entry=0, extrap=extrap at entry=0x0) at tzfile.c:155
> #2  0x0000ffff80333cd0 in tzset_internal (always=always at entry=1) at tzset.c:405
> #3  0x0000ffff80333e14 in __tzset () at tzset.c:551
> #4  0x0000ffff80332b14 in __GI_mktime (tp=tp at entry=0xffff4ae26d00) at mktime.c:529
> #5  0x0000ffff8094e7a0 in tracker_date_format_to_iso8601 (date_string=date_string at entry=0xffff4ae26d68 "2021:04:26 16:10:14", format=format at entry=0xffff80952200 "%Y:%m:%d %H:%M:%S")
>     at ../src/libtracker-extract/tracker-utils.c:464
> #6  0x0000ffff8094a4a8 in get_date (exif=exif at entry=0xffff2c00ff20, tag=tag at entry=EXIF_TAG_DATE_TIME) at ../src/libtracker-extract/tracker-exif.c:83
> #7  0x0000ffff8094b154 in parse_exif (buffer=buffer at entry=0xffff2c014840 "Exif", len=len at entry=342, data=data at entry=0xffff2c00f6e0, uri=0xffff2c0105d0 "file:///home/purism/Pictures/IMG20210426161014.jpg")
>     at ../src/libtracker-extract/tracker-exif.c:478
> #8  0x0000ffff8094bc7c in tracker_exif_new (buffer=buffer at entry=0xffff2c014840 "Exif", len=len at entry=342, uri=uri at entry=0xffff2c0105d0 "file:///home/purism/Pictures/IMG20210426161014.jpg")
>     at ../src/libtracker-extract/tracker-exif.c:614
> #9  0x0000ffff7c32faec in tracker_extract_get_metadata (info=0xaaaad820b040) at ../src/tracker-extract/tracker-extract-jpeg.c:230
> #10 0x0000aaaab303f620 in get_file_metadata (task=task at entry=0xaaaad850f590, info_out=info_out at entry=0xffff4ae277e0) at ../src/tracker-extract/tracker-extract.c:302
> #11 0x0000aaaab303fd80 in get_metadata (task=0xaaaad850f590) at ../src/tracker-extract/tracker-extract.c:511
> #12 0x0000aaaab303fdd4 in single_thread_get_metadata (queue=0xaaaad8515200) at ../src/tracker-extract/tracker-extract.c:539
> #13 0x0000ffff805468f4 in g_thread_proxy (data=0xaaaad8522a40) at ../../../glib/gthread.c:820
> #14 0x0000ffff80419628 in start_thread (arg=0xffff4ae27950) at pthread_create.c:477
> #15 0x0000ffff8037101c in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:78
> 
> and with the above it fixes it for me. The bug should likely have a
> higher priority since when e.g. systemd-coredump is installed as well
> the crash every 2s and writing the core file is a real battery drain.

Attached is a diff I'd be happy to NMU to unstable and then ask for an
unblock request.

Cheers,
 -- Guido
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